Multipath Configuration for EMC Storage in RHEL5

Hi
I have a RHEL5 server attached to an EMC (VNX 5300) storage. I want to config multipath feature for it, but I don't have a proper multipath.conf.
this is the main inserted section to multipath.conf:

Did you restart the server? If not than ask for downtime and reboot the
server, because some time Linux system not recognize new device even after
rescan the device. So reboot the server and check whether new LUN ID shows
or not.

Ask SAN team also, whether LUN ID shown in there side available or not.

After reboot run only multipath -ll command.

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As per my understanding your system already connected with SAN. If yes than
you no need to declare or change settings in multipath.conf. Because your
system already work with old SAN. Now you want to add new SAN disk. For
that you have to provide LUN ID to san team so they assign you the disk.
After that you rescan the fcs card to detect the lun using command.

Did you restart the server? If not than ask for downtime and reboot the
server, because some time Linux system not recognize new device even after
rescan the device. So reboot the server and check whether new LUN ID shows
or not.

Ask SAN team also, whether LUN ID shown in there side available or not.